CODEWITHSUNDEEP
angularautocompleteangular-materialselectedvalue
Serhio g. Lazin
Serhio g. Lazin

Reputation: 9642

Angular 2 material autocomplete selected value

I have autocomplete input

<div formArrayName="addresses"> 
  <div class="row" 
       *ngFor="let itemrow of searchForm.controls.addresses.controls; let i=index" 
       [formGroupName]="i">
    <mat-form-field>
      <input type="text" 
             class="form-control" id="address"
             formControlName="address" 
             matInput 
             [matAutocomplete]="auto"
             (keyup)="getESRI($event.target.value)"
             (focusout)="bindLocation($event.target.value)">
      <mat-autocomplete #auto="matAutocomplete">
        <mat-option *ngFor="let option of testLocation"
                    [value]="option.text">
           {{ option.text }}
        </mat-option>
      </mat-autocomplete>
    </mat-form-field> 
  </div>
</div>

"testlocation":[{"text":"Euronet","magicKey":"dHA9MSNubT1FdXJvbmV0I2NzPTE5OjExI3NjPURFVQ==","isCollection":true},{"text":"Euronet","magicKey":"dHA9MSNubT1FdXJvbmV0I2NzPTE5OjExI3NjPURFVQ==","isCollection":true}]

When I'm trying add value [value]="option.magicKey it shows in the input option.magicKey when I select option. I need option.magicKey only as the value, and option.text as the input option. Otherwise how to add option.magicKey as parameter to bindLocation($event.target.value) function?

Upvotes: 4

Views: 13656

Answers (3)

Sagar
Sagar

Reputation: 3245

Use 'displayWith'

MatAutoComplete features an input called displayWith. Therein, you need to pass a function that maps your option's control value to its display value.

Here is an example:

<mat-form-field>

  <input
    matInput
    placeholder="Select a value"
    [formControl]="form.controls.enumField"
    [matAutocomplete]="autoComplete">

  <mat-autocomplete
    #autoComplete="matAutocomplete"
    [displayWith]="valueMapper">     <-- Using displayWith here

  <mat-option
    *ngFor="let enum of enumerationObservable | async"
    [value]="enum.key">
      {{ enum.value }}
  </mat-option>

</mat-autocomplete>

Here's the function that returns value using key received

public valueMapper = (key) => {
  let selection = this.enumeration.find(e => e.key === key);
  if (selection)
    return selection.value;
};

Upvotes: 11

Mohit Saxena
Mohit Saxena

Reputation: 1449

Use [displayWith] attribute with auto complete field.

HTML FILE

<input
  type="text"
  placeholder="Address"
  mdInput
  formControlName="address" 
  [mdAutocomplete]="auto"
  (keyup)="onKeyUp()">
<md-autocomplete
  #auto="mdAutocomplete"
  [displayWith]="displayFn">
  <md-option *ngFor="let option of options"
    [value]="option">
    {{ option.text }}
  </md-option>
</md-autocomplete>

Upvotes: 1

Serhio g. Lazin
Serhio g. Lazin

Reputation: 9642

<mat-option> has event onSelectionChange, with this event you can call any function and bind everything from option object

(onSelectionChange)="bindLocation(option.text, option.magicKey)"

Upvotes: 0

Related Questions